
<h1><span class="yiyi-st" id="yiyi-13">numpy.polysub</span></h1>
        <blockquote>
        <p>原文：<a href="https://docs.scipy.org/doc/numpy/reference/generated/numpy.polysub.html">https://docs.scipy.org/doc/numpy/reference/generated/numpy.polysub.html</a></p>
        <p>译者：<a href="https://github.com/wizardforcel">飞龙</a> <a href="http://usyiyi.cn/">UsyiyiCN</a></p>
        <p>校对：（虚位以待）</p>
        </blockquote>
    
<dl class="function">
<dt id="numpy.polysub"><span class="yiyi-st" id="yiyi-14"> <code class="descclassname">numpy.</code><code class="descname">polysub</code><span class="sig-paren">(</span><em>a1</em>, <em>a2</em><span class="sig-paren">)</span><a class="reference external" href="http://github.com/numpy/numpy/blob/v1.11.3/numpy/lib/polynomial.py#L744-L788"><span class="viewcode-link">[source]</span></a></span></dt>
<dd><p><span class="yiyi-st" id="yiyi-15">两个多项式的差值（减法）。</span></p>
<p><span class="yiyi-st" id="yiyi-16">给定两个多项式<em class="xref py py-obj">a1</em>和<em class="xref py py-obj">a2</em>，返回<code class="docutils literal"><span class="pre">a1</span> <span class="pre"> - </span> <span class="pre">a2</span> / t2&gt;。</code></span><span class="yiyi-st" id="yiyi-17"><em class="xref py py-obj">a1</em>和<em class="xref py py-obj">a2</em>可以是多项式系数（包括等于零的系数）或者<a class="reference internal" href="numpy.poly1d.html#numpy.poly1d" title="numpy.poly1d"><code class="xref py py-obj docutils literal"><span class="pre">poly1d</span></code></a>对象的类阵列序列。</span></p>
<table class="docutils field-list" frame="void" rules="none">
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<tr class="field-odd field"><th class="field-name"><span class="yiyi-st" id="yiyi-18">参数：</span></th><td class="field-body"><p class="first"><span class="yiyi-st" id="yiyi-19"><strong>a1，a2</strong>：array_like或poly1d</span></p>
<blockquote>
<div><p><span class="yiyi-st" id="yiyi-20">Minuend和Subrahend多项式。</span></p>
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</td>
</tr>
<tr class="field-even field"><th class="field-name"><span class="yiyi-st" id="yiyi-21">返回：</span></th><td class="field-body"><p class="first"><span class="yiyi-st" id="yiyi-22"><strong>out</strong>：ndarray或poly1d</span></p>
<blockquote class="last">
<div><p><span class="yiyi-st" id="yiyi-23">数组或<a class="reference internal" href="numpy.poly1d.html#numpy.poly1d" title="numpy.poly1d"><code class="xref py py-obj docutils literal"><span class="pre">poly1d</span></code></a>对象。</span></p>
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<div class="admonition seealso">
<p class="first admonition-title"><span class="yiyi-st" id="yiyi-24">也可以看看</span></p>
<p class="last"><span class="yiyi-st" id="yiyi-25"><a class="reference internal" href="numpy.polyval.html#numpy.polyval" title="numpy.polyval"><code class="xref py py-obj docutils literal"><span class="pre">polyval</span></code></a>，<a class="reference internal" href="numpy.polydiv.html#numpy.polydiv" title="numpy.polydiv"><code class="xref py py-obj docutils literal"><span class="pre">polydiv</span></code></a>，<a class="reference internal" href="numpy.polymul.html#numpy.polymul" title="numpy.polymul"><code class="xref py py-obj docutils literal"><span class="pre">polymul</span></code></a>，<a class="reference internal" href="numpy.polyadd.html#numpy.polyadd" title="numpy.polyadd"><code class="xref py py-obj docutils literal"><span class="pre">polyadd</span></code></a></span></p>
</div>
<p class="rubric"><span class="yiyi-st" id="yiyi-26">例子</span></p>
<div class="math">
<p></p>
</div><div class="highlight-default"><div class="highlight"><pre><span></span><span class="gp">&gt;&gt;&gt; </span><span class="n">np</span><span class="o">.</span><span class="n">polysub</span><span class="p">([</span><span class="mi">2</span><span class="p">,</span> <span class="mi">10</span><span class="p">,</span> <span class="o">-</span><span class="mi">2</span><span class="p">],</span> <span class="p">[</span><span class="mi">3</span><span class="p">,</span> <span class="mi">10</span><span class="p">,</span> <span class="o">-</span><span class="mi">4</span><span class="p">])</span>
<span class="go">array([-1,  0,  2])</span>
</pre></div>
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</dd></dl>
